Zinc For Hair Loss: How It Works, Benefits, And Side Effects

Medically Reviewed by Dr. Priya Gill, MBBCH, MRCP
By Anjali Sayee

Zinc for hair loss has become a potential treatment. We often see people consuming zinc supplements to improve hair loss. We know that nutrients are essential for hair growth, but do you know how zinc is beneficial and what exactly it does for hair loss? This article discusses all the benefits of zinc on hair and how zinc deficiency affects hair health. Read on.

Zinc Deficiency And Hair Loss

Research shows that zinc deficiency may cause hair loss (1). Such hair loss can most often be treated with zinc supplementation. In another study, participants with male pattern hair loss, female pattern hair loss, and telogen effluvium were deficient in zinc (2). Individuals with alopecia areata (an autoimmune disease that leads to patchy hair loss in a roundish configuration) were also found to have low zinc levels (3).

While zinc seems to have an important role in combating hair loss, more research is warranted. Other studies suggest no significant relationship between zinc deficiency and hair loss (1), (4), (5).

If you are wondering how zinc can improve your hair, here are some of its benefits.

Benefits Of Zinc For Hair

  1. A study showed that alopecia areata may be treated with zinc supplementation (6). Nine out of 15 participants in the study showed improved hair growth with regular intake of zinc supplements.
  2. Another study used oral supplementation of chelated zinc paired with regular applications of topical minoxidil (7). The chelated zinc played an important role in hair growth in female pattern hair loss.
  3. Zinc contains enzymes crucial for certain functional activities in the hair follicles (7). The nutrient also helps inhibit hair follicle regression and may accelerate the healing of hair follicles.
  4. Oral zinc sulfate can help treat patchy alopecia areata with a low relapse rate after cessation of the treatment (8).
  5. Oral L-cystine, when combined with zinc, can treat diffuse alopecia. It also can increase hair count, improve hair density, and boost keratin content (9).
  6. Topical and oral supplementation of zinc is said to impact hair loss and promote hair growth. Zinc may inhibit 5-alpha reductase, an enzyme that may disrupt hair growth. Zinc also has anti-inflammatory and antioxidant properties that may promote hair growth (9).
  7. Zinc chelates paired with pyrithione may be used as a treatment for dandruff (9).
  8. Zinc is an enzyme activator. It activates protein transformation necessary for hair building (10).
  9. Zinc deficiencies might diminish hair health and make hair brittle (11). This problem may be treated with zinc supplementation
  10. Free radicals cause oxidative damage and lead to hair loss. Zinc, being an antioxidant, can help balance the production of free radicals (11).

One of the best ways to avoid a zinc deficiency is to consume more foods rich in zinc. Here are some food options you can consider adding to your everyday diet.

Foods Rich In Zinc

A diet low in zinc can cause hair loss and make hair brittle (11). You can counter this by consuming fish and meat, which are rich in zinc (1). Oysters, red meat, and poultry are the best sources of zinc (12). Vegetables and grains are comparatively lower in zinc. Other zinc-rich foods include crabs, lobster, dairy products, beans, nuts, and fortified breakfast cereals

Foods Rich In Zinc
FoodMilligrams (mg) per servingPercent DV*
Oysters, cooked, breaded and fried, 3 ounces74673
Beef chuck roast, braised, 3 ounces764
Crab, Alaska king, cooked, 3 ounces6.559
Beef patty, broiled, 3 ounces5.348
Lobster, cooked, 3 ounces3.431
Pork chop, loin, cooked, 3 ounces2.926
Baked beans, canned, plain or vegetarian, ½ cup2.926
Breakfast cereal, fortified with 25% of the DV for zinc, 1 serving2.825
Chicken, dark meat, cooked, 3 ounces2.422
Pumpkin seeds, dried, 1 ounce2.220
Yogurt, fruit, low fat, 8 ounces1.715
Cashews, dry roasted, 1 ounce1.615
Chickpeas, cooked, ½ cup1.312
Cheese, Swiss, 1 ounce1.211
Oatmeal, instant, plain, prepared with water, 1 packet1.110
Milk, low-fat or non fat, 1 cup19
Almonds, dry roasted, 1 ounce0.98
Kidney beans, cooked, ½ cup0.98
Chicken breast, roasted, skin removed, ½ breast0.98
Cheese, cheddar or mozzarella, 1 ounce0.98
Peas, green, frozen, cooked, ½ cup0.55
Flounder or sole, cooked, 3 ounces0.33

Zinc Dosage For Hair

Following are the adequate zinc dosage values recommended by the Food and Nutrition Board (12):

Recommended Dietary Allowances (RDAs) for Zinc
AgeMaleFemalePregnancyLactation
0 – 6 months2 mg*2 mg*
7 – 12 months3 mg3 mg
1 – 3 years3 mg3 mg
4 – 8 years5 mg5 mg
9 – 13 years8 mg8 mg
14 – 18 years11 mg9 mg12 mg13 mg
19+ years11 mg8 mg11 mg12 mg

Side Effects

Excess intake of zinc can lead to zinc toxicity. It can cause nausea, vomiting, diarrhea, headaches, and abdominal cramps (12).

It is also advisable to check with a doctor before taking zinc supplements with medications. Certain medications may react adversely with zinc. Antibiotics can inhibit zinc absorption. Diuretics may reduce zinc levels in the body and cause a deficiency. Zinc may also reduce the absorption and activity of penicillamine, hindering rheumatoid arthritis treatment (12).

Key Takeaways

  • Zinc is an essential nutrient for hair health, and a deficiency may lead to hair loss and damage.
  • Topical and oral zinc supplementation can help improve hair growth, count, density, and keratin content.
  • Oysters, red meat, poultry, beans, nuts, and vegetables are common sources of dietary zinc.
  • It is recommended to consult a doctor before starting zinc supplements with any other health concerns or in combination with other medicines.

Zinc plays an important role in combating hair loss. Using zinc for hair loss can be a good idea as it is proven to have treated hair loss problems in people with alopecia areata. According to anecdotal evidence, regular zinc supplementation may also improve hair growth. Consuming a zinc-rich diet like crabs, fish, nuts, beans, lobster, dairy products, and cereals may help combat hair loss issues. You may also make a few lifestyle changes and maintain a healthy sleep pattern to keep your hair issues at bay.

Frequently Asked Questions

What happens if you take zinc every day?

You can have zinc daily so long as it is within the recommended dosage. Excess intake may lead to vomiting, stomach issues, and other health problems.

When should I take zinc in the morning or night?

Zinc can be taken at any time of the day. However, you should not take it on an empty stomach as it may upset the stomach.

Can zinc cause blood clots?

Zinc deficiency may lead to blood clots and other irregularities.

Is it OK to take vitamin C and zinc together?

Yes. It is alright to consume vitamin C with zinc, provided they are within their recommended dosage.

References:

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author
Anjali specializes in hairstyles and hair and skin care and has written over 200 articles in these domains. Her philosophy... more

Dr. Priya Gill

(MBBCH, MRCP)
Dr. Priya Gill is a consultant dermatologist in Klang, Malaysia. She specializes in the management of all medical and surgical... more

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